Patents by Inventor Anita C. Van Laeken

Anita C. Van Laeken has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Toner compositions with surface additives
    Patent number: 6610452
    Abstract: A toner composition includes a binder, a colorant, and surface-treated sol-gel metal oxide particles surface-treated with a treatment agent.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: August 26, 2003
    Assignee: Xerox Corporation
    Inventors: James R. Combes, Richard P. N. Veregin, Mary L. McStravick, Ronald J. Koch, Anita C. Van Laeken, Bing R. Hsieh
  • TONER COMPOSITIONS WITH SURFACE ADDITIVES
    Publication number: 20030134217
    Abstract: A toner composition includes a binder, a colorant, and surface-treated sol-gel metal oxide particles surface-treated with a treatment agent.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 17, 2003
    Inventors: James R. Combes, Richard P. N. Veregin, Mary L. McStravick, Ronald J. Koch, Anita C. Van Laeken, Bing R. Hsieh
  • Monomodal, monodisperse toner compositions and imaging processes thereof
    Patent number: 5312704
    Abstract: A toner composition comprised of pigment particles, and a resin comprised of a monomodal polymer resin or monomodal polymer resin blends and wherein the monomodal resin or resin blends possess a narrow polydispersity.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: May 17, 1994
    Assignee: Xerox Corporation
    Inventors: Timothy J. Fuller, Ralph A. Mosher, Anita C. Van Laeken
  • Photochromic composition containing a diphenyl dibenzochrom-3-ene
    Patent number: 3973966
    Abstract: Disclosed are novel imaging imaging comprising photochromic compounds of the formula: ##SPC1##Wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms or a substituted or unsubstituted phenyl group. The photochromic compounds are responsive to light in the visible and ultraviolet region of the spectrum.
    Type: Grant
    Filed: May 8, 1974
    Date of Patent: August 10, 1976
    Assignee: Xerox Corporation
    Inventors: John B. Flannery, Anita C. Van Laeken